Google also is putting Google Sync out to pasture as of Jan. 30, 2013, because it has been superseded by other open protocols, specifically IMAP, CalDAV and CardDAV. However, this applies only to users of Google's free services. Google Sync will remain in place for Google Apps for business, government and education customers.

Google Calendar Sync availability ended Friday, Dec. 14. Google Sync for Nokia S60 gets the boot on Jan. 30, 2013, along with a little-used contact sync service for older devices, known as SyncML.

A mechanism for viewing and updating Project Hosting issues in Google Code, the Issue Tracker API, will be mothballed on June 14, 2013.

Punchd, a loyalty rewards app for Android and iOS, is being shut down on June 7, 2013. Those with Punchd rewards can redeem them until that date.

Google's product purge began when company co-founder Larry Page became CEO in 2011. He subsequently described the goal of the initiative as an effort to "put more wood behind fewer arrows."

The last such shutdown was announced in September. Since the closures began, Google has shut down around 70 services.

Interesting to see all the Calendar synch stuff being sunsetted. One form of synch that no one seems to be able to do well is synching reminders and cleared-reminders between mobile and desktop. When I clear a reminder from my desktop, I shouldn't pick up my mobile only to find it stills sitting there. Sometimes, I don't look at my mobile or my tablet for a while. Picking them up only to find a ton of reminders that I cleared hours ago on another device is pretty frustrating.

If they shut down Issue Tracker API, shouldn't they be rehauling Google Code too? It was a nice product, then it just kinda languished. Now everyone seems to be moving back to either sourceforge or github...

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